Imbeoyement in automatic wagqn-beake



@man giros@ @mfffiiif'- `'ro ALLWHOM v,1'1 AMAY CoNcERm.

. new end usei'ul Imp `I when it is desired to back the wagon without brin/gingv the brakes into play.

i slotted bolster H, slottedperoh I, and bolt Rasi` and for thepufrpose. set forth.

WILL 1 A Ml D.` M5111, E R,v -o F n N 05H1 o.

. Laren PMMNO. easafdaed Mai-.ah 12,1867'.

IMPROVBMENI In AUToMATIeowAGN-BRAKR-' i' Be it linowntimt I, Will), MILLER, of Enon, vin the county of Clark,v and' vState of Ohio, have invented a.

rovement in AutomaticiWagorvlrakes.j 'and I do here i clear, and exact description of tho-'sama reference being had to the accompanying drawings, in which- I. Figure -I is a plan view of lf-vagonhaving my'improvement attached,I f

-y dclare the following to be a full, v-

Figure 2 is a vertical longitudinal section 'through the forward axleA and holster on the line x of iig. El.'A

' Figure 3 is ah elevation of the front axle.'v Figure 4 is the extension-rod,

-. That others may understand-the construetion'a-nd 'operation` oi`-n1yA invention, I will particularly describe it,l The running gear and frameworkare not diilierentfrom those in ordinary use, hut the. forward axle has a forward andhackwardnioti'on as the-horses'draw upon 'the-tongue, or holdback, as in descending a hill, and

this forward and backward motion ol` thej'axle'if;l corninunicatedto the brakes A, which press against. the'rear.

wheels, by means of the bar B and forked connecting-rod The barB rests .upon the perch braces D '1), te which they are' secured by the;leng=ta3plesl3-E,jer come ezinigglent, device, which willlnot permit the solid ha:v

to have any .vertical motion whatever, while itmay rn'ove horizontally back vaini'lforth inv the directionl of the front of th'ejwagon in obedience to the moveliient of the brake-rodCr` In order to perniit the axle and brakerod to move back and forth as described, the front bolster, 'as well` as the end of thevperch I, is slotted, `,asl-shown, in the.iguresof'thedrawing. While1 the kingbolt F'passcs through the Slots a and brin thesbolster H andperch I, itpsses through closeholes in. thefaxlc G and the -eorvlnecting-rod Cf, `l,The 'ect of this-arrangement' -irisevident vAs the horses holdjbaek, orthe carriage-'moves forward faster than they do, the front nxle G will be moved backward so vastodccrease the distance'between itand the rearaxle; this'occnrs becausepf the. slots h anda, which permit tllisincrea'se 0r decrease of distance. As thermale-.movesbackward it carries "with it the,

' king-bolt F .andthe connecting-rod @because the hole .iii axle G and iod' C, through .which the bolt F passes,

allows said bolt 'o play room. The backward movelnent ofthe connecting-ro'fifl` insux-Isa Corresponding.move- I menthl't'he har B and brake shoes A A, and vthe latterl are thereby pressed against the peripheries ofthe rear..1 wheels. ,When the wagon bears a load, the friction between thesad-board GVand'the bolster H wouldbevery' vgreat if the 'rollers .IJ were notl introdueed;' they'may be set either in the bolster orsa-nd-board, and rmay occupy su'ch a'positon hs 'isffound advantageous, their obje-ct Aheilig simply to prevent friction "between the l holster and aiile,fwhicl1 would neu'tralie hartialiyror 'whollythe -ac'tion of the brakes. i It sometimes: happens that it is. desirable to increase the distancel between the'front and rear/axles,l and as this'is only doneby running thenearmrle'backA upon-the perch', the brakes would be rendered inoperative ifvno means were'p'rovidedfor lengthening the rodv O; this isdone'byfmenns of an extension-bar, K, ig.. 3, which 'may he bolted-to the end of I C 4izvhen'it is desired to lengthen the wagonv as described. The pin L convenien'tly'suspended by a short chain,

is used to fasten the bar C in place, by inserting it-.through the hole' M into'al eorrespondi-nghole in the perch' Having described .my invention, whatv I claim as new, and desiret secure by Letters katent, isv1. The axleA Gand slotted bolster. H, inv combination with the rollers J, substantially as and for thelpurposev set forth. l i 1 f2. The automatic brake A, operated by ineans of the connectingwod C and axle G, in combination with the v .s WM. 13g-MILLER. `AWitnesses: i v

J. WARREN'KEIFER, D. A. .Hanmsorn 

